JP3593053B2 - Flat display device - Google Patents

Flat display device Download PDF

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Publication number
JP3593053B2
JP3593053B2 JP2001116791A JP2001116791A JP3593053B2 JP 3593053 B2 JP3593053 B2 JP 3593053B2 JP 2001116791 A JP2001116791 A JP 2001116791A JP 2001116791 A JP2001116791 A JP 2001116791A JP 3593053 B2 JP3593053 B2 JP 3593053B2
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Prior art keywords
circuit board
lcd
connection cable
display device
grounding
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JP2002214636A (en
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圭晃 鄭
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133334—Electromagnetic shields

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は，平面ディスプレイ装置に係り，特に，回路基板の接地構造を改善した平面ディスプレイ装置に関する。
【０００２】
【従来の技術】
一般に平面ディスプレイ装置は，中央部に開口が形成された前面カバーと，前面カバーに密着して結合される後面カバーと，前面カバー及び後面カバーの間に設けられ外部システムと連結されて画像をディスプレイするＬＣＤパネル（Ｌｉｑｕｉｄ Ｃｒｙｓｔａｌ Ｄｉｓｐｌａｙ Ｐａｎｅｌ）と，を有する。
【０００３】
図５は従来のＬＣＤパネルの背面図である。図示したように，ＬＣＤパネル１１５は，外部に画像をディスプレイする板状のＬＣＤモジュール１１７と，ＬＣＤモジュール１１７の外観を形成するシャーシ１１９と，を有する。
【０００４】
ＬＣＤモジュール１１７の下部の領域には，ＬＣＤモジュール１１７を照らすランプ１２１が設けられており，ＬＣＤモジュール１１７の背面にはＬＣＤモジュール１１７を作動させる回路基板１２５が装着されている。
【０００５】
回路基板１２５は，回路を形成する複数の基板が積層されたものであって，回路基板１２５の下端の一側には，連結ケーブル１５１と結合されて外部システム（図示せず）と連結されるコネクタ１２７が設けられている。回路基板１２５の略中央の領域には，コネクタ１２７と連結されて外部システムから入力される信号によってＬＣＤモジュール１１７を作動させるＬＣＤコントローラ（Ｌｉｑｕｉｄ Ｃｒｙｓｔａｌ Ｄｉｓｐｌａｙ Ｃｏｎｔｒｏｌｌｅｒ）１２９が設けられている。回路基板１２５の上端にはＬＣＤコントローラ１２９から送出されるデジタル信号をＬＣＤモジュール１１７に画像ディスプレイができるようにアナログ信号に変換させる複数のドライバーＩＣ（Ｉｎｔｅｇｒａｔｅｄ Ｃｉｒｃｕｉｔ）１３１が設けられており，ドライバーＩＣ１３１はＬＣＤモジュール１１７に結合されている。ＬＣＤコントローラ１２９と各ドライバーＩＣ１３１は，回路基板１２５に設けられた多くのシグナルライン（Ｓｉｇｎａｌ Ｌｉｎｅ）１３３によって連結され，各シグナルライン１３３は，ＬＣＤコントローラ１２９から送出されるデジタル信号を各ドライバーＩＣ１３１に電送する。
【０００６】
一方，最近，平面ディスプレイ装置の小形化に従って回路基板１２５を縮小化する傾向がある。ＬＣＤコントローラ１２９と各ドライバーＩＣ１３１を相互連結する各シグナルライン１３３の数に対して回路基板１２５が縮小化されることにより，回路基板１２５の接地領域１３５は分散される構造を有する。図５には図示されていないが，各基板ごと異なり形成された接地領域１３５はバイアホール（Ｖｉａ Ｈｏｌｅ）によって相互連結されている。
【０００７】
回路基板１２５の接地領域１３５の一部が，シャーシ１１９の左端及び右端にネジ１３７によってネジ結合された一対の導体板１３９に連結されることにより，回路基板１２５はシャーシ１１９に接地される。
【０００８】
しかしながら，このような従来の平面ディスプレイ装置においては，回路基板の構造上，回路基板の接地領域の一部だけをシャーシの一側に連結して接地し，特に平面ディスプレイ装置で電磁波の放出が最高であるＬＣＤコントローラの周りには接地領域が形成されていないので，電磁波の放出の増加だけでなく，ＬＣＤコントローラとドライバーＩＣを連結するシグナルラインを通して電送される各デジタル信号が電磁波の影響を受けて不安定に電送されて製品の信頼性が低下する問題点がある。
【０００９】
【発明が解決しようとする課題】
本発明は，このような問題点に鑑みてなされたもので，その目的とするところは，電磁波の放出の最小化及び製品の信頼性の向上を図ることができる平面ディスプレイ装置を提供することである。
【００１０】
【課題を解決するための手段】
前述した課題を達成するために本発明は，平面ディスプレイ装置において，少なくとも，画像をディスプレイするＬＣＤモジュールと，ＬＣＤモジュールの端を囲み外観を形成するシャーシと，連結ケーブルによって外部のシステムと連結されるコネクタを有し，シャーシに接地される回路基板と，回路基板に設けられてＬＤＣモジュールを作動させるＬＣＤコントローラと，ＬＣＤコントローラの周りに形成された接地領域と，を含むことを特徴とする平面ディスプレイ装置である。
【００１１】
さらに，接地領域に連結されて，回路基板の接地を補強する補強コネクタを含み，連結ケーブルに連結されるようにするのが好ましい。
【００１２】
この補強コネクタは，連結ケーブルが受容される受容部が形成された補強コネクタ本体と，補強コネクタ本体に設けられて受容部を開閉し，受容部に前記連結ケーブルを締結するカバーと，受容部に設けられて連結ケーブルと回路基板の接地領域とに連結される接地部と，を含むのが好ましい。
【００１３】
【発明の実施の形態】
以下，本発明の実施形態としてＬＣＤモジュール（Ｌｉｑｕｉｄ Ｃｒｙｓｔａｌ Ｄｉｓｐｌａｙ Ｍｏｄｕｌｅ）を有する平面ディスプレイ装置に対して添付した図面を参照しながら詳細に説明する。
【００１４】
図１は一般の平面ディスプレイ装置の斜視図であり，図２は図１の分解斜視図である。これら図面に示したように，平面ディスプレイ装置は，中央部に開口が形成された前面カバー１１と，前面カバー１１に密着して結合される後面カバー１３と，前面カバー１１及び後面カバー１３との間に設けられて外部システム（図示せず）と連結されて画像をディスプレイするＬＣＤパネル（Ｌｉｑｕｉｄ Ｃｒｙｓｔａｌ Ｄｉｓｐｌａｙ Ｐａｎｅｌ）１５と，を有する。
【００１５】
ＬＣＤパネル１５は，外部に画像をディスプレイする板状のＬＣＤモジュール１７とＬ，ＣＤモジュール１７の端を囲み，外観を形成するシャーシ１９と，を有する。
【００１６】
ＬＣＤパネルの背面図である図３に示したように，ＬＣＤモジュール１７の下部領域にはＬＣＤモジュール１７を照らすランプ２１が設けられており，ランプ２１の一端はランプケーブル２３に連結されている。ＬＣＤモジュール１７の背面にはＬＣＤモジュール１７を作動させる回路基板２５が装着されている。
【００１７】
回路基板２５は，回路を形成する複数の基板が積層されたものであって，回路基板２５の下端の一側には，連結ケーブル５１と結合されて外部システムと連結されるコネクタ２７が設けられている。コネクタ２７には，外部システムから入力される信号によってＬＣＤモジュール１７を作動させるＬＣＤコントローラ（Ｌｉｑｕｉｄ Ｃｒｙｓｔａｌ Ｄｉｓｐｌａｙ Ｃｏｎｔｒｏｌｌｅｒ）２９が連結されている。回路基板２５の上端には，ＬＣＤコントローラ２９から送出されるデジタル信号をＬＣＤモジュール１７にディスプレイができるようにアナログ信号に変換させる複数のドライバーＩＣ（Ｉｎｔｅｇｒａｔｅｄ Ｃｉｒｃｕｉｔ）３１が設けられており，各ドライバーＩＣ３１はＬＣＤモジュール１７に結合されている。ＬＣＤコントローラ２９と各ドライバーＩＣ３１は，回路基板２５に設けられた多くのシグナルライン（Ｓｉｇｎａｌ Ｌｉｎｅ）３３によって連結され，各シグナルライン３３は，ＬＣＤコントローラ２９から送出されるデジタル信号を各ドライバーＩＣ３１に電送する。
【００１８】
回路基板２５のシグナルライン３３の周りには，複数の接地領域３５が設けられており，特に，ＬＣＤコントローラ２９の周りにはＬＣＤコントローラ２９を囲むコントローラ接地領域３５ａが形成されている。図３には図示されていないが，各回路基板ごと異なり形成された接地領域３５，３５ａは，バイアホール（Ｖｉａ Ｈｏｌｅ）（図示せず）によって相互に連結されている。
【００１９】
回路基板２５のＬＣＤコントローラ２９の周りに設けられたコントローラ接地領域３５ａは，後述する補強コネクタ４１の接地部４９（図４参照）に連結されて補強コネクタ４１に連結される連結ケーブル５１に接地される。また，他の接地領域３５は，シャーシ１９の左端及び右端にネジ３７によってネジ結合された一対の導体板３９に連結されることにより，シャーシ１９に接地される。
【００２０】
一方，回路基板２５の一側に設けられたコネクタ２７の両側には回路基板２５の接地を補強する一対の補強コネクタ４１が設けられている。図４に示したように，補強コネクタ４１は，連結ケーブル５１の接地ピン（図示せず）が受容される上部が開放された受容部４５が形成された補強コネクタ本体４３と，補強コネクタ本体４３の受容部４５を開閉するように設けられて受容部４５に連結ケーブル５１を固定するカバー４７と，補強コネクタ本体４３の受容部４５の底に設けられてコネクタ２７の接地ピン（図示せず）とＬＣＤコントローラ２９の周りのコントローラ接地領域３５ａに連結される接地部４９と，を有する。
【００２１】
補強コネクタ４１の接地部４９は半田付けによってＬＣＤコントローラ２９の周りのコントローラ接地領域３５ａの一側に連結される。また，補強コネクタ４１の接地部４９は，コネクタ２７の接地ピン（図示せず）にも連結されてコネクタ２７がＬＣＤコントローラ２９の周りのコントローラ接地領域３５ａを通じて接地される。
【００２２】
補強コネクタ４１に連結ケーブル５１を連結する時，先ず，カバー４７を上向き回転させて受容部４５を開放した状態で，連結ケーブル５１の接地ピンを挿入し，カバー４７を下向き回転させて受容部４５を閉鎖することにより，連結ケーブル５１が受容部４５に受容されて連結ケーブル５１が補強コネクタ４１に締結され，受容部４５内の連結ケーブル５１の接地ピンは接地部４９に連結されて，補強コネクタ４１はＬＣＤコントローラ２９の周りのコントローラ接地領域３５ａに連結される。
【００２３】
以上の構成によって，補強コネクタ４１の接地部４９を通して，連結ケーブル５１の接地ピンとコネクタ２７の接地ピンをＬＣＤコントローラ２９の周りのコントローラ接地領域３５ａに連結させることができる。また，前述の回路基板２５の一部の接地領域３５は，シャーシ１９の左端及び右端にネジ３７によってネジ結合された一対の導体板３９に連結されることによりシャーシ１９に接地される。
【００２４】
従って，平面ディスプレイ装置で電磁波の放出が最高であるＬＣＤコントローラ２９の周りの接地領域３５が連結ケーブル５１に連結されることにより，平面ディスプレイ装置の電磁波の放出を最小化することができ，ＬＣＤコントローラ２９から各デジタル信号を安定的に各ドライバーＩＣ３１に送出することができる。また，ＬＣＤコントローラ２９の周りの接地領域３５ａに連結されるように回路基板の接地を補強する補強コネクタ４１を設けることにより，接地効果をさらに向上させることができる。
【００２５】
以上，添付図面を参照しながら本発明にかかる平面ディスプレイ装置の好適な実施形態について説明したが，本発明はかかる例に限定されない。当業者であれば，特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかでありそれについても当然に本発明の技術的範囲に属するものと了解される。
【００２６】
【発明の効果】
以上，詳細に説明したように本発明によれば，電磁波の放出の最小化及び製品の信頼性の向上を図ることができる平面ディスプレイ装置を提供することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態による平面ディスプレイ装置の斜視図である。
【図２】図１の分解斜視図である。
【図３】図２のＬＣＤパネルの背面図である。
【図４】図１から図３の補強コネクタの概略斜視図である。
【図５】従来のＬＣＤパネルの背面図である。
【符号の説明】
１５ ＬＣＤパネル
１７ ＬＣＤモジュール
１９ シャーシ
２５ 回路基板
２７ コネクタ
２９ ＬＣＤコントローラ
３５ 接地領域
３５ａ コントローラ接地領域
４１ 補強コネクタ
４３ 補強コネクタ本体
４５ 受容部
４７ カバー
４９ 接地部
５１ 連結ケーブル[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flat display device, and more particularly, to a flat display device having an improved grounding structure of a circuit board.
[0002]
[Prior art]
2. Description of the Related Art In general, a flat panel display device includes a front cover having an opening formed in a central portion, a rear cover that is closely attached to the front cover, and an image display device that is provided between the front cover and the rear cover and connected to an external system to display an image. LCD panel (Liquid Crystal Display Panel).
[0003]
FIG. 5 is a rear view of a conventional LCD panel. As shown, the LCD panel 115 has a plate-like LCD module 117 for displaying an image to the outside, and a chassis 119 for forming an appearance of the LCD module 117.
[0004]
A lamp 121 for illuminating the LCD module 117 is provided in a lower area of the LCD module 117, and a circuit board 125 for operating the LCD module 117 is mounted on a rear surface of the LCD module 117.
[0005]
The circuit board 125 is formed by laminating a plurality of boards forming a circuit. One side of a lower end of the circuit board 125 is connected to a connection cable 151 and connected to an external system (not shown). A connector 127 is provided. An LCD controller (Liquid Crystal Display Controller) 129 connected to the connector 127 and operating the LCD module 117 according to a signal input from an external system is provided in a substantially central area of the circuit board 125. At the upper end of the circuit board 125, a plurality of driver ICs (Integrated Circuits) 131 for converting a digital signal sent from the LCD controller 129 into an analog signal so that an image can be displayed on the LCD module 117 are provided. It is coupled to the LCD module 117. The LCD controller 129 and each driver IC 131 are connected by a number of signal lines (Signal Line) 133 provided on the circuit board 125. Each signal line 133 transmits a digital signal transmitted from the LCD controller 129 to each driver IC 131. I do.
[0006]
On the other hand, recently, there is a tendency to reduce the size of the circuit board 125 in accordance with the miniaturization of the flat display device. The ground area 135 of the circuit board 125 is dispersed by reducing the size of the circuit board 125 for the number of signal lines 133 interconnecting the LCD controller 129 and each driver IC 131. Although not shown in FIG. 5, the ground regions 135 formed differently for each substrate are interconnected by via holes.
[0007]
The circuit board 125 is grounded to the chassis 119 by connecting a part of the ground area 135 of the circuit board 125 to a pair of conductor plates 139 screwed to the left and right ends of the chassis 119 by screws 137.
[0008]
However, in such a conventional flat display device, due to the structure of the circuit board, only a part of the ground area of the circuit board is connected to one side of the chassis and grounded. Since no ground area is formed around the LCD controller, not only the emission of electromagnetic waves increases, but also each digital signal transmitted through the signal line connecting the LCD controller and the driver IC is affected by the electromagnetic waves. There is a problem that the reliability of the product is reduced due to unstable transmission.
[0009]
[Problems to be solved by the invention]
The present invention has been made in view of such a problem, and an object of the present invention is to provide a flat display device capable of minimizing the emission of electromagnetic waves and improving the reliability of products. is there.
[0010]
[Means for Solving the Problems]
According to an aspect of the present invention, there is provided a flat panel display device, wherein at least an LCD module for displaying an image, a chassis surrounding an edge of the LCD module to form an external appearance, and a connection cable are connected to an external system. A flat display, comprising: a circuit board having a connector and grounded to a chassis; an LCD controller provided on the circuit board to operate an LDC module; and a ground area formed around the LCD controller. Device.
[0011]
In addition, it is preferable that a reinforcing connector for reinforcing the grounding of the circuit board is included in the grounding area, and is connected to the connecting cable.
[0012]
The reinforcing connector includes a reinforcing connector body having a receiving portion for receiving the connection cable, a cover provided on the reinforcing connector body for opening and closing the receiving portion, and a cover for fastening the connecting cable to the receiving portion, and a receiving portion for the receiving portion. Preferably, a grounding part is provided and connected to the connection cable and the grounding region of the circuit board.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a flat display apparatus having an LCD module (Liquid Crystal Display Module) will be described in detail with reference to the accompanying drawings as an embodiment of the present invention.
[0014]
FIG. 1 is a perspective view of a general flat display device, and FIG. 2 is an exploded perspective view of FIG. As shown in the drawings, the flat display device includes a front cover 11 having an opening formed in a central portion, a rear cover 13 that is tightly coupled to the front cover 11, and a front cover 11 and a rear cover 13. And an LCD panel (Liquid Crystal Display Panel) 15 that is connected to an external system (not shown) and displays an image.
[0015]
The LCD panel 15 has a plate-shaped LCD module 17 for displaying an image to the outside, and a chassis 19 surrounding the ends of the L and CD modules 17 and forming an appearance.
[0016]
As shown in FIG. 3 which is a rear view of the LCD panel, a lamp 21 for illuminating the LCD module 17 is provided in a lower area of the LCD module 17, and one end of the lamp 21 is connected to a lamp cable 23. On the back of the LCD module 17, a circuit board 25 for operating the LCD module 17 is mounted.
[0017]
The circuit board 25 is formed by stacking a plurality of boards forming a circuit, and a connector 27 connected to a connection cable 51 and connected to an external system is provided at one lower end of the circuit board 25. ing. An LCD controller (Liquid Crystal Display Controller) 29 for operating the LCD module 17 according to a signal input from an external system is connected to the connector 27. At the upper end of the circuit board 25, a plurality of driver ICs (Integrated Circuits) 31 for converting a digital signal sent from the LCD controller 29 into an analog signal so as to be displayed on the LCD module 17 are provided. Is coupled to the LCD module 17. The LCD controller 29 and each driver IC 31 are connected by many signal lines (Signal Lines) 33 provided on the circuit board 25. Each signal line 33 transmits a digital signal transmitted from the LCD controller 29 to each driver IC 31. I do.
[0018]
A plurality of ground regions 35 are provided around the signal lines 33 of the circuit board 25. In particular, a controller ground region 35a surrounding the LCD controller 29 is formed around the LCD controller 29. Although not shown in FIG. 3, the ground regions 35 and 35a formed differently for each circuit board are connected to each other by a via hole (not shown).
[0019]
The controller ground area 35a provided around the LCD controller 29 of the circuit board 25 is connected to a grounding portion 49 (see FIG. 4) of the reinforcing connector 41 described later and grounded to a connecting cable 51 connected to the reinforcing connector 41. You. The other ground area 35 is grounded to the chassis 19 by being connected to a pair of conductor plates 39 screwed to the left and right ends of the chassis 19 by screws 37.
[0020]
On the other hand, on both sides of the connector 27 provided on one side of the circuit board 25, a pair of reinforcing connectors 41 for reinforcing the ground of the circuit board 25 are provided. As shown in FIG. 4, the reinforcing connector 41 includes a reinforcing connector body 43 having a receiving portion 45 having an open top for receiving a ground pin (not shown) of the connection cable 51, and a reinforcing connector body 43. A cover 47 is provided to open and close the receiving portion 45 and fixes the connecting cable 51 to the receiving portion 45, and a ground pin (not shown) of the connector 27 provided on the bottom of the receiving portion 45 of the reinforcing connector body 43. And a ground portion 49 connected to a controller ground region 35a around the LCD controller 29.
[0021]
The grounding portion 49 of the reinforcing connector 41 is connected to one side of the controller grounding area 35a around the LCD controller 29 by soldering. The grounding portion 49 of the reinforcing connector 41 is also connected to a grounding pin (not shown) of the connector 27, and the connector 27 is grounded through a controller grounding area 35a around the LCD controller 29.
[0022]
When connecting the connecting cable 51 to the reinforcing connector 41, first, the cover 47 is rotated upward to open the receiving portion 45, and then the ground pin of the connecting cable 51 is inserted, and the cover 47 is rotated downward to receive the receiving portion 45. Is closed, the connecting cable 51 is received by the receiving portion 45, the connecting cable 51 is fastened to the reinforcing connector 41, and the ground pin of the connecting cable 51 in the receiving portion 45 is connected to the grounding portion 49, and the reinforcing connector 41 is connected to the controller ground area 35a around the LCD controller 29.
[0023]
With the above configuration, the ground pin of the connection cable 51 and the ground pin of the connector 27 can be connected to the controller ground area 35 a around the LCD controller 29 through the ground portion 49 of the reinforcing connector 41. A part of the ground area 35 of the circuit board 25 is grounded to the chassis 19 by being connected to a pair of conductor plates 39 screwed to the left and right ends of the chassis 19 by screws 37.
[0024]
Therefore, since the grounding area 35 around the LCD controller 29 where the emission of electromagnetic waves is highest in the flat display device is connected to the connection cable 51, the emission of the electromagnetic waves of the flat display device can be minimized. 29, each digital signal can be stably transmitted to each driver IC 31. Further, by providing the reinforcing connector 41 for reinforcing the ground of the circuit board so as to be connected to the ground area 35a around the LCD controller 29, the grounding effect can be further improved.
[0025]
Although the preferred embodiments of the flat display device according to the present invention have been described with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that those skilled in the art can conceive various changes or modifications within the scope of the technical idea described in the claims, and these also naturally belong to the technical scope of the present invention. It is understood.
[0026]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a flat display device capable of minimizing the emission of electromagnetic waves and improving the reliability of products.
[Brief description of the drawings]
FIG. 1 is a perspective view of a flat display device according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of FIG.
FIG. 3 is a rear view of the LCD panel of FIG. 2;
FIG. 4 is a schematic perspective view of the reinforcing connector of FIGS. 1 to 3;
FIG. 5 is a rear view of a conventional LCD panel.
[Explanation of symbols]
15 LCD Panel 17 LCD Module 19 Chassis 25 Circuit Board 27 Connector 29 LCD Controller 35 Grounding Area 35a Controller Grounding Area 41 Reinforcement Connector 43 Reinforcement Connector Main Body 45 Receptacle 47 Cover 49 Grounding Section 51 Connecting Cable

Claims (2)

平面ディスプレイ装置において，少なくとも，画像をディスプレイするＬＣＤモジュールと，前記ＬＣＤモジュールの端を囲み外観を形成するシャーシと，連結ケーブルによって外部のシステムと連結されるコネクタを有し，前記シャーシに接地される回路基板と，前記回路基板に設けられて前記ＬＣＤモジュールを作動させるＬＣＤコントローラと，前記ＬＣＤコントローラの周りを囲むように形成され，該ＬＣＤコントローラからの電磁波の放出を抑える接地領域と，前記接地領域と前記連結ケーブルとを連結し，前記回路基板の接地を補強する補強コネクタと，を含むことを特徴とする平面ディスプレイ装置。The flat panel display device has at least an LCD module for displaying an image, a chassis surrounding an end of the LCD module to form an external appearance, and a connector connected to an external system by a connection cable, and grounded to the chassis. A circuit board, an LCD controller provided on the circuit board to operate the LCD module, a ground area formed to surround the LCD controller and suppressing emission of electromagnetic waves from the LCD controller, and the ground area And a reinforcing connector for connecting the connection cable and the connection cable to reinforce grounding of the circuit board. 前記補強コネクタは，前記連結ケーブルが受容される受容部が形成された補強コネクタ本体と，前記補強コネクタ本体に設けられて前記受容部を開閉し，前記受容部に前記連結ケーブルを締結するカバーと，前記受容部に設けられて前記連結ケーブルと前記回路基板の接地領域とに連結される接地部と，を含むことを特徴とする請求項１に記載の平面ディスプレイ装置。The reinforcing connector includes a reinforcing connector body having a receiving portion for receiving the connection cable, a cover provided on the reinforcing connector body for opening and closing the receiving portion, and fastening the connection cable to the receiving portion. 2. The flat display device according to claim 1 , further comprising a grounding part provided in the receiving part and connected to the connection cable and a grounding area of the circuit board.
JP2001116791A 2001-01-04 2001-04-16 Flat display device Expired - Fee Related JP3593053B2 (en)

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US20020084995A1 (en) 2002-07-04
KR100412106B1 (en) 2003-12-24
TWI225229B (en) 2004-12-11
US6924855B2 (en) 2005-08-02
JP2002214636A (en) 2002-07-31

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